The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 100 |
| 4 | 1664 |
| 5 | 34336 |
| 6 | 843776 |
| 7 | 24046912 |
| 8 | 779780096 |
| 9 | 28357004800 |
| 10 | 1143189536768 |
| 11 | 50612287301632 |
| 12 | 2441525866790912 |
| 13 | 127479926768287744 |
| 14 | 7163315850315825152 |
| 15 | 431046122080208896000 |
| 16 | 27655699473265974050816 |
| 17 | 1884658377677216933085184 |
[1,8,100,1664,34336,843776,24046912,779780096, 28357004800,1143189536768,50612287301632, 2441525866790912,127479926768287744, 7163315850315825152,431046122080208896000, 27655699473265974050816,1884658377677216933085184] |